There's a recent paper on this topic if you're looking for a very in-depth discussion: https://harvardnsj.org/wp-content/uploads/sites/13/2022/06/Vol13Iss2_Kost

There's a recent paper on this topic if you're looking for a very in-depth discussion: https://harvardnsj.org/wp-content/uploads/sites/13/2022/06/Vol13Iss2_Kostyuk-Landau_Dual-EC-DRGB.pdf https://harvardnsj.org/wp-content/uploads/sites/13/2022/06/V... The conclusion is no, there is no alternative right now.